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DE10101795A1 - Flashing light, especially front flashing light, for motor vehicles has boundary light source in part of light conducting element in part of path of light from flashing light source - Google Patents

Flashing light, especially front flashing light, for motor vehicles has boundary light source in part of light conducting element in part of path of light from flashing light source

Info

Publication number
DE10101795A1
DE10101795A1 DE10101795A DE10101795A DE10101795A1 DE 10101795 A1 DE10101795 A1 DE 10101795A1 DE 10101795 A DE10101795 A DE 10101795A DE 10101795 A DE10101795 A DE 10101795A DE 10101795 A1 DE10101795 A1 DE 10101795A1
Authority
DE
Germany
Prior art keywords
light
flashing
light source
generate
emitted
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
DE10101795A
Other languages
German (de)
Inventor
Kurt Schuster
Silke Emmelmann
Ernst-Olaf Rosenhahn
Doris Boebel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marelli Automotive Lighting Reutlingen Germany GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to DE10101795A priority Critical patent/DE10101795A1/en
Publication of DE10101795A1 publication Critical patent/DE10101795A1/en
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/0029—Spatial arrangement
    • B60Q1/0041—Spatial arrangement of several lamps in relation to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/0029—Spatial arrangement
    • B60Q1/0041—Spatial arrangement of several lamps in relation to each other
    • B60Q1/0058—Stacked, i.e. one lamp located behind the other in the optical axis direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/2607—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic comprising at least two indicating lamps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F21S43/237—Light guides characterised by the shape of the light guide rod-shaped
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/242—Light guides characterised by the emission area
    • F21S43/245—Light guides characterised by the emission area emitting light from one or more of its major surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/247—Light guides with a single light source being coupled into the light guide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/12—Combinations of only three kinds of elements
    • F21V13/14—Combinations of only three kinds of elements the elements being filters or photoluminescent elements, reflectors and refractors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0045—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide
    • G02B6/0046—Tapered light guide, e.g. wedge-shaped light guide
    • G02B6/0048—Tapered light guide, e.g. wedge-shaped light guide with stepwise taper
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/255—Filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • F21W2103/20—Direction indicator lights
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/003—Lens or lenticular sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0031—Reflecting element, sheet or layer

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

The light has at least one flashing light source (10), a transparent colorless cover (12) over the light outlet opening and at least one other boundary light source (20) in part of a light conducting element (22) in part of the path of light from the first source. Light from the second source enters the light conducting element transversely to the light from the first source and exits in the same direction (13) as light from the first source.

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einer Blinkleuchte, insbesondere vordere Blinkleuchte, für Kraftfahrzeuge nach der Gattung des Anspruchs 1.The invention is based on a flashing light, in particular Front turn signal, for motor vehicles of the type of claim 1.

Eine solche Blinkleuchte ist durch die DE 196 24 244 A1 bekannt. Diese Blinkleuchte weist eine Lichtquelle auf, die zur Erzeugung des Blinklichts dient, und eine eine Lichtaustrittsöffnung der Blinkleuchte abdeckende lichtdurchlässige, farblose Scheibe. Die Blinkleuchte dient dabei nur zur Erzeugung des Blinklichts. Bei Kraftfahrzeugen ist außerdem in gesetzlichen Regelungen vorgeschrieben, daß diese Begrenzungsleuchten aufweisen müssen, um die Breite des Kraftfahrzeugs zu markieren. Üblicherweise wird die Funktion des Begrenzungslichts durch eine separate Begrenzungsleuchte oder durch die Anordnung einer weiteren Lichtquelle zur Erzeugung des Begrenzungslichts in einem Scheinwerfer erfüllt. Dies ist beispielsweise in der DE 41 12 194 A1 vorgesehen. Nachteilig hierbei ist, daß durch die Nutzung des Scheinwerfers neben dessen eigentlicher Lichtfunktion, wie beispielsweise zur Erzeugung des Abblendlichts oder Fernlichts, auch zur Erzeugung des Begrenzungslichts dieser für seine eigentliche Lichtfunktion wegen des reduzierten Bauraums und/oder der zuwiderlaufenden optischen Anforderungen für die Erzeugung des Begrenzungslichts nicht optimal ausgelegt werden kann.Such a flashing light is known from DE 196 24 244 A1 known. This flashing light has a light source that serves to generate the flashing light, and a Flashing light covering the light outlet opening translucent, colorless lens. The flashing light serves only to generate the flashing light. In motor vehicles it is also prescribed by law that these marker lights must have the width to mark the motor vehicle. Usually the Function of the marker light through a separate Position lamp or by arranging another Light source for generating the marker light in one Headlights met. This is for example in DE 41 12 194 A1 intended. The disadvantage here is that Use of the headlight in addition to the actual one Light function, such as for generating the Low beam or high beam, also for generating the Limiting light for its actual light function because of the reduced space and / or the contradicting  optical requirements for the generation of the Limiting light can not be optimally designed.

Vorteile der ErfindungAdvantages of the invention

Die erfindungsgemäße Blinkleuchte mit den Merkmalen gemäß Anspruch 1 hat demgegenüber den Vorteil, daß diese zugleich für die Erzeugung des Begrenzungslichts dient. Durch das wenigstens eine Lichtleitelement kann von der wenigstens einen zur Erzeugung des Blinklichts dienenden Lichtquelle ausgesandtes Licht hindurchtreten und von der wenigstens einen weiteren zur Erzeugung des Begrenzungslichts dienenden Lichtquelle ausgesandtes Licht wird durch das Lichtleitelement auf die Lichtaustrittsfläche der Blinkleuchte verteilt, so daß beide Funktionen Blinklicht und Begrenzungslicht erfüllt werden können.The flashing light according to the invention with the features according to Claim 1 has the advantage that this at the same time serves to generate the marker light. By the at least one light-guiding element can be of the at least one a light source used to generate the flashing light emitted light pass through and from the at least another for generating the marker light Light emitted by the light Lichtleitelement on the light exit surface of the Flashing light distributed so that both functions flashing light and marker light can be fulfilled.

In den abhängigen Ansprüchen sind vorteilhafte Ausgestaltungen und Weiterbildungen der erfindungsgemäßen Blinkleuchte angegeben. Das wenigstens eine Lichtleitelement kann wie im Anspruch 2 angegeben genutzt werden, um eine für das Blinklicht erforderliche Beleuchtungsstärkeverteilung zu erzeugen. Durch die Ausbildung gemäß Anspruch 5 kann ein großer Teil des von der wenigstens einen weiteren zur Erzeugung des Begrenzungslichts dienenden Lichtquelle ausgesandten Lichts genutzt werden.In the dependent claims are advantageous Refinements and developments of the invention Direction indicator indicated. The at least one light-guiding element can be used as specified in claim 2, one for the required light intensity distribution produce. Through the training according to claim 5, a large part of the from the at least one more to the Generation of the boundary light serving light source emitted light can be used.

Zeichnungdrawing

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen Fig. 1 eine Blinkleuchte in einem horizontalen Längsschnitt, Fig. 2 die Blinkleuchte in einem vertikalen Längsschnitt und Fig. 3 die Blinkleuchte in einer Vorderansicht. An embodiment of the invention is shown in the drawing and explained in more detail in the following description. In the drawings Fig. 1 is a flashing light in a horizontal longitudinal section, Fig. 2 the flashing light in a vertical longitudinal section, and Fig. 3, the flashing light in a front view.

Beschreibung des AusführungsbeispielsDescription of the embodiment

In den Fig. 1 bis 3 ist eine Blinkleuchte für ein Kraftfahrzeug dargestellt, die insbesondere eine vordere Blinkleuchte ist. Die Blinkleuchte weist wenigstens eine Lichtquelle 10 auf, die zur Erzeugung des Blinklichts dient. Als Lichtquelle 10 kann wie in den Fig. 1 und 2 dargestellt eine Glühlampe oder alternativ eine Neonröhre oder eine oder mehrere Leuchtdioden verwendet werden. Die Lichtaustrittsöffnung der Blinkleuchte ist mit einer lichtdurchlässigen, farblosen Scheibe 12 abgedeckt. Die Abdeckscheibe 12 besteht vorzugsweise aus Kunststoff, kann jedoch auch aus Glas gefertigt sein. Die Blinkleuchte kann außerdem ein Gehäuse 14 aufweisen, in dem die Lichtquelle 10 angeordnet ist und an dem die Abdeckscheibe 12 befestigt ist. Die Lichtquelle 10 weist einen Glaskolben 11 auf, der in der für die Funktion der Blinkleuchte erforderlichen Signalfarbe gelb oder orange gefärbt ist oder eine entsprechend farbige Beschichtung aufweist. Anstelle eines farbigen Glaskolbens 11 kann zur Erzeugung der erforderlichen Signalfarbe auch im Strahlengang des von der Lichtquelle 10 ausgesandten Lichts ein Farbfilter 15 angeordnet sein, wobei der Glaskolben 11 der Lichtquelle 10 dann farblos sein kann.In Figs. 1 to 3 is shown a flashing light for a motor vehicle, which is particularly a front turn signal lamp. The flashing light has at least one light source 10 which is used to generate the flashing light. As shown in FIGS. 1 and 2, an incandescent lamp or alternatively a neon tube or one or more light-emitting diodes can be used as the light source 10 . The light exit opening of the turn signal lamp is covered with a translucent, colorless pane 12 . The cover plate 12 is preferably made of plastic, but can also be made of glass. The flashing light can also have a housing 14 in which the light source 10 is arranged and to which the cover plate 12 is attached. The light source 10 has a glass bulb 11 which is colored yellow or orange in the signal color required for the function of the flashing light or has a correspondingly colored coating. Instead of a colored glass bulb 11 , a color filter 15 can also be arranged in the beam path of the light emitted by the light source 10 in order to generate the required signal color, the glass bulb 11 of the light source 10 then being colorless.

Es kann vorgesehen sein, daß bei der Blinkleuchte nur das von der Lichtquelle 10 direkt zur Abdeckscheibe 12 hin ausgesandte Licht zur Erzeugung des Blinklichts genutzt wird, wobei dann der Wirkungsgrad jedoch nicht optimal ist. Vorzugsweise weist die Blinkleuchte einen Reflektor 16 auf, in den die Lichtquelle 10 eingesetzt ist. Durch den Reflektor 16 wird von der Lichtquelle 10 ausgesandtes Licht reflektiert, so daß es durch die Abdeckscheibe 12 austritt und eine für das Blinklicht vorgeschriebene Beleuchtungsstärkeverteilung erzeugt und aus ebenfalls vorgeschriebenen Richtungen sichtbar ist. Der Reflektor 16 ist vorzugsweise konkav gekrümmt ausgebildet und die Lichtquelle 10 ist in dessen Scheitelbereich eingesetzt. Der Reflektor 16 kann beispielsweise eine zumindest annähernd parabolische Form aufweisen, so daß durch diesen von der Lichtquelle 10 ausgesandtes Licht als ein annähernd paralleles Lichtbündel reflektiert wird.It can be provided that only the light emitted by the light source 10 directly to the cover plate 12 is used to generate the flashing light in the turn signal lamp, but then the efficiency is not optimal. The flashing light preferably has a reflector 16 in which the light source 10 is inserted. Light emitted by the light source 10 is reflected by the reflector 16 , so that it exits through the cover plate 12 and generates a prescribed illuminance distribution for the flashing light and is visible from likewise prescribed directions. The reflector 16 is preferably concavely curved and the light source 10 is used in the apex region. The reflector 16 can, for example, have an at least approximately parabolic shape, so that light emitted by the light source 10 reflects it as an approximately parallel light beam.

Die Blinkleuchte weist zusätzlich zu der wenigstens einen für die Erzeugung des Blinklichts dienenden Lichtquelle 10 wenigstens eine weitere Lichtquelle 20 auf, die zur Erzeugung eines Begrenzungslichts dient. Als weitere Lichtquelle 20 kann beispielsweise wie in den Fig. 1 und 2 dargestellt eine Glühlampe oder alternativ eine oder mehrere Leuchtdioden verwendet werden. In wenigstens einem Teil des Strahlengangs des von der zur Erzeugung des Blinklichts dienenden Lichtquelle 10 ausgesandten Lichts und des vom Reflektor 16 reflektierten Lichts ist zwischen der Lichtquelle 10 und der Abdeckscheibe 12 ein lichtdurchlässiges Lichtleitelement 22 angeordnet. Das Lichtleitelement 22 verläuft quer zur Lichtaustrittsrichtung 13 der Blinkleuchte. Das Lichtleitelement 22 weist eine der wenigstens einen weiteren Lichtquelle 20 gegenüberliegende Lichteintrittsfläche 24 auf, durch die von der Lichtquelle 20 ausgesandtes Licht in das Lichtleitelement 22 eintritt. Die weitere Lichtquelle 20 und die Lichteintrittsfläche 24 des Lichtleitelements 22 können beispielsweise seitlich neben dem Reflektor 16 angeordnet sein, wobei diese jedoch auch unterhalb oder oberhalb des Reflektors 16 angeordnet sein können.In addition to the at least one light source 10 which is used to generate the blinking light, the turn signal lamp has at least one further light source 20 which is used to generate a position light. As an additional light source 20 , for example, as shown in FIGS. 1 and 2, an incandescent lamp or alternatively one or more light-emitting diodes can be used. In at least part of the beam path of the light emitted by the light source 10 used to generate the flashing light and the light reflected by the reflector 16 , a light-transmitting light-guiding element 22 is arranged between the light source 10 and the cover plate 12 . The light guide element 22 extends transversely to the light exit direction 13 of the turn signal lamp. The light guide element 22 has a light entry surface 24 opposite the at least one further light source 20 , through which light emitted by the light source 20 enters the light guide element 22 . The further light source 20 and the light entry surface 24 of the light guide element 22 can, for example, be arranged laterally next to the reflector 16 , but these can also be arranged below or above the reflector 16 .

Aas Lichtleitelement 22 kann aus Glas oder Kunststoff bestehen und ist farblos ausgebildet. Im Lichtleitelement 22 breitet sich von der Lichtquelle 20 ausgesandtes und in dieses eingekoppeltes Licht beispielsweise durch Totalreflexion an den Begrenzungsflächen des Lichtleitelements 22 in einer Ausbreitungsrichtung 26 aus. An der entgegen Lichtaustrittsrichtung 13 weisenden Rückwand 28 des Lichtleitelements 22 sind über die Längserstreckung des Lichtleitelements 22 verteilt mehrere zur Ausbreitungsrichtung 26 des Lichts derart geneigte Flächen 30 ausgebildet, daß diese in Ausbreitungsrichtung 26 in Lichtaustrittsrichtung 13 verlaufen. Zwischen den Flächen 30 verläuft die Rückwand 28 des Lichtleitelements 22 zumindest annähernd parallel zur Ausbreitungsrichtung 26, so daß sich im Lichtleitelement 22 ausbreitendes Licht an der Rückwand 28 totalreflektiert wird. Wenn sich im Lichtleitelement 22 ausbreitendes Licht auf die geneigten Flächen 30 trifft, so wird es an diesen derart reflektiert, daß es aus dem Lichtleitelement 22 durch dessen in Lichtaustrittsrichtung 13 weisende Vorderwand 32 in Lichtaustrittsrichtung 13 austritt. Die geneigten Flächen 30 des Lichtleitelements 22 bilden prismenartige optische Profile, durch die das von der weiteren Lichtquelle 20 ausgesandte und sich im Lichtleitelement 22 ausbreitende Licht aus dem Lichtleitelement 22 ausgekoppelt wird. Die geneigten Flächen 30 des Lichtleitelements 22 können mit einer reflektierenden Beschichtung versehen sein, um das sich im Lichtleitelement 22 ausbreitende Licht durch dessen Vorderwand 32 auszukoppeln. In diesem Fall wird ein kleiner Teil des von der zur Erzeugung des Blinklichts dienenden Lichtquelle 10 ausgesandten und vom Reflektor 16 reflektierten Lichts durch die Flächen 30 abgeschirmt.The light guide element 22 can consist of glass or plastic and is colorless. In the light-guiding element 22 , light emitted and coupled into the light source 20 propagates in a direction of propagation 26, for example by total reflection on the boundary surfaces of the light-guiding element 22 . On the opposite light exit direction 13 facing rear wall 28 of the light-guiding element 22 of the light-guiding element 22, over the longitudinal extent distributed more to the propagation direction 26 of the light so inclined surfaces 30 formed such that they extend in the direction of propagation 26 in the light exit direction. 13 Between the surfaces 30 , the rear wall 28 of the light-guiding element 22 runs at least approximately parallel to the direction of propagation 26 , so that light propagating in the light-guiding element 22 is totally reflected on the rear wall 28 . When light propagating in the light-guiding element 22 hits the inclined surfaces 30 , it is reflected on these in such a way that it emerges from the light-guiding element 22 through its front wall 32 pointing in the light exit direction 13 in the light exit direction 13 . The inclined surfaces 30 of the light guide 22 form prism-like optical profiles, through which the light emitted from the other light source 20 and propagating in the light guide 22, light is coupled out of the light guide member 22nd The inclined surfaces 30 of the light guide element 22 can be provided with a reflective coating in order to couple out the light propagating in the light guide element 22 through its front wall 32 . In this case, a small part of the light emitted by the light source 10 used to generate the flashing light and reflected by the reflector 16 is shielded by the surfaces 30 .

Das von der Lichtquelle 10 ausgesandte Licht erhält durch deren gefärbten Glaskolben 11 oder das Farbfilter 15 die erforderliche Signalfarbe, wird vom Reflektor 16 reflektiert und tritt durch das Lichtleitelement 22 hindurch und in Lichtaustrittsrichtung 13 aus der Blinkleuchte aus und erzeugt das Blinklicht mit der hierfür erforderlichen Beleuchtungsstärkeverteilung und Sichtbarkeit aus unterschiedlichen Richtungen. Das Lichtleitelement 22 kann an seiner Rückwand 28 und/oder an seiner Vorderwand 32 optische Profile 34 aufweisen, durch die von der Lichtquelle 10 ausgesandtes und vom Reflektor 16 reflektiertes Licht beim Durchtritt abgelenkt und/oder gestreut wird, um die für das Blinklicht erforderliche Beleuchtungsstärkeverteilung und/oder Sichtbarkeit zu erzeugen. Das Lichtleitelement 22 kann auch an seiner Vorderwand 32 optische Profile 36 aufweisen, durch die von der weiteren Lichtquelle 20 ausgesandtes und sich im Lichtleitelement. 22 ausbreitendes Licht beim Austritt aus dem Lichtleitelement 22 abgelenkt und/oder gestreut wird, um die für das Begrenzungslicht erforderliche Beleuchtungsstärkeverteilung und/oder Sichtbarkeit zu erzeugen.The light emitted by the light source 10 receives the required signal color through its colored glass bulb 11 or the color filter 15 , is reflected by the reflector 16 and exits the flashing light through the light guide element 22 and in the light exit direction 13 and generates the flashing light with the required illuminance distribution and visibility from different directions. The light-guiding element 22 can have on its rear wall 28 and / or on its front wall 32 optical profiles 34 , through which light emitted by the light source 10 and reflected by the reflector 16 is deflected and / or scattered when passing through the illuminance distribution required for the flashing light and / or create visibility. The light guiding element 22 can also have optical profiles 36 on its front wall 32 , through which profiles emitted by the further light source 20 and located in the light guiding element. 22 propagating light is deflected and / or scattered upon exiting the light guide element 22 in order to generate the illuminance distribution and / or visibility required for the boundary light.

Alternativ oder zusätzlich zu den optischen Profilen 34 und/oder 36 am Lichtleitelement 22 können auch an der Abdeckscheibe 12 optische Profile 38 angeordnet sein, durch die von der Lichtquelle 10 ausgesandtes, vom Reflektor 16 reflektiertes und durch das Lichtleitelement 22 hindurchtretendes Licht beim Durchtritt abgelenkt und/oder gestreut wird, um die für das Blinklicht erforderliche Beleuchtungsstärkeverteilung und/oder Sichtbarkeit zu erzeugen. Durch die optischen Profile 38 kann außerdem von der weiteren Lichtquelle 20 ausgesandtes und aus dem Lichtleitelement 22 austretendes Licht beim Durchtritt abgelenkt und/oder gestreut werden, um die für das Begrenzungslicht erforderliche Beleuchtungsstärkeverteilung und/oder Sichtbarkeit zu erzeugen.As an alternative or in addition to the optical profiles 34 and / or 36 on the light-guiding element 22 , optical profiles 38 can also be arranged on the cover plate 12 , through which light emitted by the light source 10 , reflected by the reflector 16 and passing through the light-guiding element 22 , deflects and passes through / or is scattered in order to generate the illuminance distribution and / or visibility required for the flashing light. The optical profiles 38 can also be used to deflect and / or scatter light emitted by the further light source 20 and emerging from the light guide element 22 in order to produce the illuminance distribution and / or visibility required for the boundary light.

Der wenigstens einen weiteren zur Erzeugung des Begrenzungslichts dienenden Lichtquelle 20 kann wenigstens ein optisches Element zugeordnet sein, um einen möglichst großen Anteil des von dieser ausgesandten Lichts in das Lichtleitelement 22 einzukoppeln. Als optisches Element kann beispielsweise ein Reflektor 40 verwendet werden, durch den von der weiteren Lichtquelle 20 ausgesandtes Licht auf die Lichteintrittsfläche 24 des Lichtleitelements 22 gerichtet reflektiert wird. Alternativ oder zusätzlich zum Reflektor 40 kann auch ein optisches Element in Form einer Linse 42 verwendet werden, das im Strahlengang des von der weiteren Lichtquelle 20 ausgesandten Lichts angeordnet ist und durch das das hindurchtretende Licht auf die Lichteintrittsfläche 24 des Lichtleitelements 22 gerichtet wird.The at least one further light source 20 , which is used to generate the limiting light, can be assigned at least one optical element in order to couple the largest possible proportion of the light emitted by it into the light guide element 22 . A reflector 40 can be used as the optical element, for example, by means of which light emitted by the further light source 20 is reflected in a directed manner onto the light entry surface 24 of the light guide element 22 . As an alternative or in addition to the reflector 40 , an optical element in the form of a lens 42 can also be used, which is arranged in the beam path of the light emitted by the further light source 20 and through which the light passing through is directed onto the light entry surface 24 of the light guide element 22 .

Das Lichtleitelement 22 kann sich wie in den Fig. 1 bis 3 dargestellt über die gesamte Lichtaustrittsöffnung der Blinkleuchte erstrecken. Es kann jedoch auch vorgesehen sein, daß sich das Lichtleitelement 22 nur über einen Teil der Lichtaustrittsöffnung der Blinkleuchte erstreckt, wobei dann ein Teil des von der zur Erzeugung des Blinklichts dienenden Lichtquelle 10 ausgesandten und vom Reflektor 16 reflektierten Lichts nicht durch das Lichtleitelement 22 hindurchtritt sondern direkt aus der Blinkleuchte austritt.As shown in FIGS. 1 to 3, the light guide element 22 can extend over the entire light exit opening of the turn signal lamp. However, it can also be provided that the light-guiding element 22 extends only over part of the light exit opening of the turn signal lamp, in which case part of the light emitted by the light source 10 used to generate the blinking light and reflected by the reflector 16 does not pass through the light-guiding element 22 but instead emerges directly from the flashing light.

Die Blinkleuchte gemäß dem vorstehend erläuterten Ausführungsbeispiel kann als separate Leuchte am Kraftfahrzeug angeordnet sein und ein eigenes Gehäuse aufweisen. Die Blinkleuchte kann auch wie in Fig. 3 dargestellt Bestandteil einer Scheinwerfer-Leuchten-Einheit sein, bei der in einem gemeinsamen Gehäuse 44 wenigstens ein Scheinwerfer und die Blinkleuchte zusammengefaßt sind. Im Gehäuse 44 ist wenigstens ein Reflektor 46 mit einer Lichtquelle 47 für den Scheinwerfer angeordnet. Die Blinkleuchte mit ihrem Reflektor 16 sowie den Lichtquellen 10, 20 ist unterhalb des Reflektors 46 des Scheinwerfers angeordnet, kann jedoch auch seitlich neben oder oberhalb des Reflektors 46 des Scheinwerfers angeordnet sein. Es können auch mehrere Reflektoren 46, 48 von mehreren Scheinwerfern für unterschiedliche Lichtfunktionen im Gehäuse 44 angeordnet sein, beispielsweise ein Reflektor 46 mit einer Lichtquelle 47 für die Lichtfunktion Abblendlicht und ein Reflektor 48 mit einer Lichtquelle 49 für die Lichtfunktion Fernlicht. Die Abdeckscheibe 12 kann sich über die gesamte Lichtaustrittsöffnung des Gehäuses 44 erstrecken.The turn signal lamp according to the exemplary embodiment explained above can be arranged as a separate lamp on the motor vehicle and have its own housing. The flashing light can also be part of a headlight-lighting unit, as shown in FIG. 3, in which at least one headlight and the flashing light are combined in a common housing 44 . At least one reflector 46 with a light source 47 for the headlight is arranged in the housing 44 . The turn signal lamp with its reflector 16 and the light sources 10 , 20 is arranged below the reflector 46 of the headlight, but can also be arranged laterally next to or above the reflector 46 of the headlight. A plurality of reflectors 46 , 48 from a plurality of headlights for different light functions can also be arranged in the housing 44 , for example a reflector 46 with a light source 47 for the low-beam light function and a reflector 48 with a light source 49 for the high-beam light function. The cover plate 12 can extend over the entire light exit opening of the housing 44 .

Claims (6)

1. Blinkleuchte, insbesondere vordere Blinkleuchte, für Kraftfahrzeuge mit wenigstens einer Lichtquelle (10), die zur Erzeugung des Blinklichts dient, und mit einer eine Lichtaustrittsöffnung der Blinkleuchte abdeckenden lichtdurchlässigen, farblosen Scheibe (12), dadurch gekennzeichnet, daß die Blinkleuchte wenigstens eine weitere Lichtquelle (20) aufweist, die zur Erzeugung eines Begrenzungslichts dient, daß zumindest in einem Teil des Strahlengangs des von der wenigstens einen zur Erzeugung des Blinklichts dienenden Lichtquelle (10) ausgesandten Lichts zwischen dieser und der Abdeckscheibe (12) wenigstens ein quer zur Lichtaustrittsrichtung (13) der Blinkleuchte verlaufendes zumindest teilweise lichtdurchlässiges Lichtleitelement (22) angeordnet ist, durch das von der wenigstens einen zur Erzeugung des Blinklichts dienenden Lichtquelle (10) ausgesandtes Licht hindurchtritt, daß von der wenigstens einen weiteren zur Erzeugung des Begrenzungslichts dienenden Lichtquelle (20) ausgesandtes Licht quer zur Lichtaustrittsrichtung (13) der Blinkleuchte in das Lichtleitelement (22) eingekoppelt wird und über den Verlauf des Lichtleitelements (22) aus diesem in Lichtaustrittsrichtung (13) der Blinkleuchte austritt.1. Turn signal, in particular front turn signal, for motor vehicles with at least one light source ( 10 ), which is used to generate the turn signal, and with a light outlet opening of the turn signal light-transmitting, colorless pane ( 12 ), characterized in that the turn signal at least one more Light source ( 20 ), which is used to generate a boundary light, that at least in part of the beam path of the light emitted by the at least one light source ( 10 ) used to generate the flashing light, between the latter and the cover plate ( 12 ), at least one transverse to the light exit direction ( 13 ) the flashing light-extending at least partially translucent light-guiding element ( 22 ) is arranged, through which light emitted by the at least one light source ( 10 ) for generating the flashing light passes, and that from the at least one further Li used for generating the limiting light chtquelle (20) light emitted transversely to the light exit direction (13) of the flashing light is coupled into the light guide (22) and the flashing light exit in the light exit direction (13) over the course of the light guide (22) therefrom. 2. Blinkleuchte nach Anspruch 1, dadurch gekennzeichnet, daß das wenigstens eine Lichtleitelement (22) optische Profile (34) aufweist, durch die von der wenigstens einen zur Erzeugung des Blinklichts dienenden Lichtquelle (10) ausgesandtes Licht beim Durchtritt abgelenkt und/oder gestreut wird.2. Flashing light according to claim 1, characterized in that the at least one light-guiding element ( 22 ) has optical profiles ( 34 ) through which light emitted by the at least one light source ( 10 ) used to generate the flashing light is deflected and / or scattered upon passage , 3. Blinkleuchte nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das wenigstens eine Lichtleitelement (22) weitere optische Profile (30) aufweist, durch die von der wenigstens einen weiteren zur Erzeugung des Begrenzungslichts dienenden Lichtquelle (20) ausgesandtes und sich im Lichtleitelement (22) ausbreitendes Licht aus dem Lichtleitelement (22) ausgekoppelt wird.3. Flashing light according to claim 1 or 2, characterized in that the at least one light-guiding element ( 22 ) has further optical profiles ( 30 ) through which the at least one further light source ( 20 ) serving to generate the limiting light is emitted and located in the light-guiding element ( 22 ) propagating light is coupled out of the light guide element ( 22 ). 4. Blinkleuchte nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das wenigstens eine Lichtleitelement (22) optische Profile (36) aufweist, durch die von der wenigstens einen weiteren zur Erzeugung des Begrenzungslichts dienenden Lichtquelle (20) ausgesandtes und aus dem Lichtleitelement (22) austretendes Licht abgelenkt und/oder gestreut wird.4. Flashing light according to one of claims 1 to 3, characterized in that the at least one light-guiding element ( 22 ) has optical profiles ( 36 ), by which at least one other light source ( 20 ) is used to generate the limiting light and is emitted from the light-guiding element ( 22 ) emerging light is deflected and / or scattered. 5. Blinkleuchte nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der wenigstens einen weiteren zur Erzeugung des Begrenzungslichts dienenden Lichtquelle (20) wenigstens ein optisches Element in Form eines Reflektors (40) und/oder in Form einer Linse (42) zugeordnet ist, durch das von der Lichtquelle (20) ausgesandtes Licht auf eine Lichteintrittsfläche (24) des Lichtleitelements (22) gerichtet wird.5. Flashing light according to one of claims 1 to 4, characterized in that the at least one further light source ( 20 ) serving to generate the limiting light is assigned at least one optical element in the form of a reflector ( 40 ) and / or in the form of a lens ( 42 ) through which light emitted by the light source ( 20 ) is directed onto a light entry surface ( 24 ) of the light guide element ( 22 ). 6. Blinkleuchte nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die Abdeckscheibe (12) optische Profile (38) aufweist, durch die von der wenigstens einen zur Erzeugung des Blinklichts dienenden Lichtquelle (10) ausgesandtes Licht und/oder von der wenigstens einen weiteren zur Erzeugung des Begrenzungslichts dienenden Lichtquelle (20) ausgesandtes und aus dem Lichtleitelement austretendes Licht beim Durchtritt abgelenkt und/oder gestreut wird.6. Flashing light according to one of the preceding claims, characterized in that the cover plate ( 12 ) has optical profiles ( 38 ) through which at least one light source ( 10 ) serving to generate the flashing light emitted light and / or from the at least one further to generate the limiting light serving light source ( 20 ) emitted and emerging from the light guide element is deflected and / or scattered when passing.
DE10101795A 2001-01-17 2001-01-17 Flashing light, especially front flashing light, for motor vehicles has boundary light source in part of light conducting element in part of path of light from flashing light source Ceased DE10101795A1 (en)

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Owner name: AUTOMOTIVE LIGHTING REUTLINGEN GMBH, 72762 REUTLIN

8181 Inventor (new situation)

Inventor name: ROSENHAHN, ERNST-OLAF, 72411 BODELSHAUSEN, DE

Inventor name: BARTON, SILKE, 72764 REUTLINGEN, DE

Inventor name: SCHUSTER, KURT, 72768 REUTLINGEN, DE

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Effective date: 20120203